M66Category · further specificity requiredCurrent

Spontaneous rupture of synovium and tendon

HierarchyM65-M67 · M66

Code-level instructions

Includes

rupture that occurs when a normal force is applied to tissues that are inferred to have less than normal strength

Excludes 2

rotator cuff syndrome (M75.1-)
rupture where an abnormal force is applied to normal tissue - see injury of tendon by body region

Inherited instructions

Chapters 13 · Diseases of the musculoskeletal system and connective tissue (M00-M99)

Excludes 2

arthropathic psoriasis (L40.5-)
certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
compartment syndrome (traumatic) (T79.A-)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Note

Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

More specific codes

M66.0Rupture of popliteal cystBillable / specific M66.1Rupture of synoviumCategory · further specificity required M66.2Spontaneous rupture of extensor tendonsCategory · further specificity required M66.3Spontaneous rupture of flexor tendonsCategory · further specificity required M66.8Spontaneous rupture of other tendonsCategory · further specificity required M66.9Spontaneous rupture of unspecified tendonBillable / specific

Code history

No recorded change since first observation

ChangedUnchanged

FY2016

Effective from 2015-10-01

First observed

Spontaneous rupture of synovium and tendon

Category — select a more specific code

CDC/NCHS · FY2016

All editions (19)

All editions	Effective from	Code history
FY2016	2015-10-01	First observed
FY2017	2016-10-01	No tabular change
FY2018	2017-10-01	No tabular change
FY2019	2018-10-01	No tabular change
FY2020	2019-10-01	No tabular change
FY2020 · April	2020-04-01	No tabular change
FY2021	2020-10-01	No tabular change
FY2021 · 01-01	2021-01-01	No tabular change
FY2022	2021-10-01	No tabular change
FY2022 · 04-01	2022-04-01	No tabular change
FY2023	2022-10-01	No tabular change
FY2023 · 04-01	2023-04-01	No tabular change
FY2024	2023-10-01	No tabular change
FY2024 · 04-01	2024-04-01	No tabular change
FY2025	2024-10-01	No tabular change
FY2025 · 04-01	2025-04-01	No tabular change
FY2026	2025-10-01	No tabular change
FY2026 · April	2026-04-01	No tabular change
FY2027	2026-10-01	No tabular change

Code edition